Typo on L.35

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Wendy 1E
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Joined: Sat Aug 17, 2019 12:17 am
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Typo on L.35

Postby Wendy 1E » Tue Oct 01, 2019 8:36 pm

Hey everyone!

Homework problem L.35 states, "Sodium bromide, NaBr, which is used to produce AgBr for use in photographic film, can itself be prepared as follows:
Fe + Br2 --> FeBr2
FeBr2 + Br2 --> Fe3Br8
FeBr2 + Na2CO3 --> NaBr + CO2 + Fe3O4
What mass of iron, in kilograms, is needed to produce 2.50 t of NaBr? Note that these equations must first be balanced!"

I noticed a typo here when I was trying to balance the equations. FeBr2 should read Fe3Br2. I hope this is useful for anyone else that encounters this problem!
Last edited by Wendy 1E on Thu Oct 03, 2019 12:18 am, edited 2 times in total.

Posts: 47
Joined: Sat Aug 17, 2019 12:15 am

Re: Typo on L.35

Postby JinwooLee_1F » Tue Oct 01, 2019 8:38 pm

This is a lifesaver--I was very confused while reading this problem. Thank you for the clarification!

Emily Mendez 4C
Posts: 33
Joined: Wed Nov 14, 2018 12:19 am

Re: Typo on L.35

Postby Emily Mendez 4C » Tue Oct 01, 2019 9:05 pm

I hadn't seen this post so I was about to ask a question related to yours, but thank you so much for clarifying things!

Lauren Tanaka 1A
Posts: 109
Joined: Sat Aug 17, 2019 12:18 am

Re: Typo on L.35

Postby Lauren Tanaka 1A » Tue Oct 01, 2019 9:58 pm

By the way, there is a section on Dr. Lavelle's website for chem 14a that is titled "Solution Manual Errors 7th Edition" which lists all the errors in the solution manual.

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